package org.madao.gulimall.order.service.impl;

import com.rabbitmq.client.Channel;
import org.madao.gulimall.order.entity.OrderEntity;
import org.madao.gulimall.order.entity.OrderReturnReasonEntity;
import org.springframework.amqp.core.Message;
import org.springframework.amqp.core.MessageProperties;
import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Service;

import java.io.IOException;
import java.util.Map;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.madao.common.utils.PageUtils;
import org.madao.common.utils.Query;

import org.madao.gulimall.order.dao.OrderItemDao;
import org.madao.gulimall.order.entity.OrderItemEntity;
import org.madao.gulimall.order.service.OrderItemService;

@RabbitListener(queues = {"hello.java.queue"})
@Service("orderItemService")
public class OrderItemServiceImpl extends ServiceImpl<OrderItemDao, OrderItemEntity> implements OrderItemService {

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<OrderItemEntity> page = this.page(
                new Query<OrderItemEntity>().getPage(params),
                new QueryWrapper<OrderItemEntity>()
        );

        return new PageUtils(page);
    }

    /**
     * queues声明需要监听的所有队列
     * org.springframework . amqp.core.Message参数可以写一下类型
     * 1、Message message:原生消息详细信息。头+体
     * 2、T<发送的消息的类型> orderReturnReasonEntity content;
     * 3、Channel channel:当前传输数据的通道
     *
     * Queue:可以很多人都来监听。只要收到消息，队列删除消息，而且只能有一个收到此消息
     * 场景:
     *      1) 、订单服务启动多个;同一个消息,只能有一个客户端收到
     *      2)、只有一个消息完全处理完，方法运行结束，我们就可以接收到下一个消息
     */
//    @RabbitListener(queues = {"hello.java.queue"})
    @RabbitHandler
    public void receiveMessage(Message message,
                               OrderReturnReasonEntity content,
                               Channel channel){
//        byte[] body = message.getBody();
//        //消息头属性信息
//        MessageProperties messageProperties = message.getMessageProperties();
//        System.out.println("接收到消息，，"+message+"==》类型："+message.getClass());
//        System.out.println("内容:"+content);
        //channel内按顺序自增
        long deliveryTag = message.getMessageProperties().getDeliveryTag();
//        System.out.println("deliveryTag-->"+deliveryTag);

        //签收货物,非批量模式
        try {
            if (deliveryTag % 2 == 0) {
                //收货
                channel.basicAck(deliveryTag,false);
                System.out.println("签收了货物。。。"+deliveryTag);
            }else {
                //退货 requeue=false丢弃requeue=true发回服务器，服务器重新入队。
                channel.basicNack(deliveryTag,false,true);
                System.out.println("没有签收货物。。。"+deliveryTag);
            }
        } catch (IOException e) {
            //网络中断
        }
    }

    @RabbitHandler
    public void receiveMessage2(OrderEntity content,Message message,Channel channel){
        long deliveryTag = message.getMessageProperties().getDeliveryTag();
        System.out.println("2接收到消息，，"+deliveryTag);
        try {
            channel.basicAck(deliveryTag,false);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}